This 2006 student project by Scott Huang of Stony Brook University describes an investigation of how a drop of water acts as a lens. The curvature of a drop of water is varied, and its focal length is measured. ...

The ATETV project delivers web-based videos to connect students to careers in advanced technology. In this episode of ATETV, water treatment te¬chnology, information technology security and fuel cell technologies are ...

This webpage, part of a National Aeronautics and Space Administration's site on the electromagnetic spectrum, presents information on infrared light. An explanation of how objects emit infrared is provided, along with...

This animation shows how S-waves (secondary, or shear, waves) travel through a Slinky toy. It is accompanied by a brief written explanation that describes some of the properties of S-waves and how they are generated in...

Another informative Web site from the Environmental Protection Agency is the Online Training in Watershed Management page. Here, citizens have access to a wealth of information and tools to help them understand and...